java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:01:40,255 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:01:40,257 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:01:40,272 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:01:40,272 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:01:40,274 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:01:40,276 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:01:40,279 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:01:40,281 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:01:40,283 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:01:40,285 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:01:40,286 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:01:40,287 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:01:40,288 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:01:40,296 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:01:40,297 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:01:40,301 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:01:40,303 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:01:40,306 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:01:40,311 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:01:40,313 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:01:40,315 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:01:40,317 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:01:40,317 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:01:40,317 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:01:40,321 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:01:40,322 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:01:40,324 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:01:40,326 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:01:40,327 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:01:40,328 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:01:40,329 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 17:01:40,329 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 17:01:40,330 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 17:01:40,330 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 17:01:40,331 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 17:01:40,331 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:01:40,351 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:01:40,351 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:01:40,352 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:01:40,352 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:01:40,353 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:01:40,353 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:01:40,353 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:01:40,353 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:01:40,354 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:01:40,354 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:01:40,354 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:01:40,354 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:01:40,354 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:01:40,355 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:01:40,355 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:01:40,355 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:01:40,355 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:01:40,355 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:01:40,355 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:01:40,356 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:01:40,356 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:01:40,356 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:01:40,356 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:01:40,356 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:01:40,357 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:01:40,357 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:01:40,357 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:01:40,357 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:01:40,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:01:40,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:01:40,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:01:40,441 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:01:40,441 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:01:40,442 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c [2018-10-24 17:01:40,501 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a25957f3/c128fdb928e94f6a99e966a76c37f4ee/FLAG30f6fe598 [2018-10-24 17:01:41,343 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:01:41,344 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label00_true-unreach-call.c [2018-10-24 17:01:41,394 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a25957f3/c128fdb928e94f6a99e966a76c37f4ee/FLAG30f6fe598 [2018-10-24 17:01:41,413 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a25957f3/c128fdb928e94f6a99e966a76c37f4ee [2018-10-24 17:01:41,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:01:41,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:01:41,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:01:41,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:01:41,433 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:01:41,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:01:41" (1/1) ... [2018-10-24 17:01:41,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:41, skipping insertion in model container [2018-10-24 17:01:41,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:01:41" (1/1) ... [2018-10-24 17:01:41,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:01:41,712 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:01:43,790 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:01:43,795 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:01:44,887 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:01:44,943 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:01:44,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44 WrapperNode [2018-10-24 17:01:44,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:01:44,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:01:44,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:01:44,945 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:01:44,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:45,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:46,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:01:46,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:01:46,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:01:46,061 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:01:46,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:46,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:46,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:46,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:46,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:46,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:46,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... [2018-10-24 17:01:46,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:01:46,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:01:46,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:01:46,763 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:01:46,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:01:46,830 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:01:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:01:46,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:02:04,470 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:02:04,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:02:04 BoogieIcfgContainer [2018-10-24 17:02:04,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:02:04,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:02:04,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:02:04,475 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:02:04,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:01:41" (1/3) ... [2018-10-24 17:02:04,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39739fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:02:04, skipping insertion in model container [2018-10-24 17:02:04,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:01:44" (2/3) ... [2018-10-24 17:02:04,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39739fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:02:04, skipping insertion in model container [2018-10-24 17:02:04,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:02:04" (3/3) ... [2018-10-24 17:02:04,480 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label00_true-unreach-call.c [2018-10-24 17:02:04,490 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:02:04,501 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:02:04,518 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:02:04,572 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:02:04,572 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:02:04,573 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:02:04,573 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:02:04,573 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:02:04,573 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:02:04,573 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:02:04,573 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:02:04,574 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:02:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:02:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 17:02:04,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:02:04,909 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:02:04,911 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:02:04,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:02:04,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1074275470, now seen corresponding path program 1 times [2018-10-24 17:02:04,924 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:02:04,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:02:04,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:04,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:02:04,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:02:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:02:05,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:02:05,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:02:05,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:02:05,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:02:05,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:05,489 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:02:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:02:26,721 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-24 17:02:26,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:02:26,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-24 17:02:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:02:26,777 INFO L225 Difference]: With dead ends: 6324 [2018-10-24 17:02:26,777 INFO L226 Difference]: Without dead ends: 4568 [2018-10-24 17:02:26,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-24 17:02:26,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-24 17:02:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-24 17:02:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-24 17:02:27,022 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 41 [2018-10-24 17:02:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:02:27,022 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-24 17:02:27,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:02:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-24 17:02:27,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 17:02:27,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:02:27,032 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:02:27,032 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:02:27,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:02:27,032 INFO L82 PathProgramCache]: Analyzing trace with hash 215777173, now seen corresponding path program 1 times [2018-10-24 17:02:27,033 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:02:27,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:02:27,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:27,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:02:27,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:02:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:02:27,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:02:27,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:02:27,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:02:27,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:02:27,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:27,425 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-24 17:02:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:02:56,907 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-24 17:02:56,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:02:56,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-24 17:02:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:02:56,975 INFO L225 Difference]: With dead ends: 17544 [2018-10-24 17:02:56,975 INFO L226 Difference]: Without dead ends: 12983 [2018-10-24 17:02:56,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-24 17:02:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12980. [2018-10-24 17:02:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12980 states. [2018-10-24 17:02:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12980 states to 12980 states and 20479 transitions. [2018-10-24 17:02:57,226 INFO L78 Accepts]: Start accepts. Automaton has 12980 states and 20479 transitions. Word has length 119 [2018-10-24 17:02:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:02:57,226 INFO L481 AbstractCegarLoop]: Abstraction has 12980 states and 20479 transitions. [2018-10-24 17:02:57,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:02:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 12980 states and 20479 transitions. [2018-10-24 17:02:57,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 17:02:57,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:02:57,232 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:02:57,232 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:02:57,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:02:57,233 INFO L82 PathProgramCache]: Analyzing trace with hash -378716299, now seen corresponding path program 1 times [2018-10-24 17:02:57,233 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:02:57,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:02:57,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:57,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:02:57,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:02:57,595 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 17:02:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:02:57,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:02:57,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:02:57,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:02:57,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:02:57,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:02:57,625 INFO L87 Difference]: Start difference. First operand 12980 states and 20479 transitions. Second operand 4 states. [2018-10-24 17:03:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:21,789 INFO L93 Difference]: Finished difference Result 50899 states and 80619 transitions. [2018-10-24 17:03:21,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:21,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-24 17:03:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:21,914 INFO L225 Difference]: With dead ends: 50899 [2018-10-24 17:03:21,914 INFO L226 Difference]: Without dead ends: 37921 [2018-10-24 17:03:22,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37921 states. [2018-10-24 17:03:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37921 to 37908. [2018-10-24 17:03:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37908 states. [2018-10-24 17:03:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37908 states to 37908 states and 50827 transitions. [2018-10-24 17:03:22,643 INFO L78 Accepts]: Start accepts. Automaton has 37908 states and 50827 transitions. Word has length 139 [2018-10-24 17:03:22,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:22,644 INFO L481 AbstractCegarLoop]: Abstraction has 37908 states and 50827 transitions. [2018-10-24 17:03:22,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 37908 states and 50827 transitions. [2018-10-24 17:03:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 17:03:22,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:22,646 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:03:22,647 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:22,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:22,647 INFO L82 PathProgramCache]: Analyzing trace with hash 15763358, now seen corresponding path program 1 times [2018-10-24 17:03:22,647 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:22,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:22,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:22,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:22,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:23,396 WARN L179 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:03:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:23,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:23,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:03:23,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:03:23,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:03:23,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:03:23,450 INFO L87 Difference]: Start difference. First operand 37908 states and 50827 transitions. Second operand 6 states. [2018-10-24 17:03:51,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:51,601 INFO L93 Difference]: Finished difference Result 125117 states and 164448 transitions. [2018-10-24 17:03:51,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:03:51,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-24 17:03:51,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:51,739 INFO L225 Difference]: With dead ends: 125117 [2018-10-24 17:03:51,740 INFO L226 Difference]: Without dead ends: 87211 [2018-10-24 17:03:51,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:03:51,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87211 states. [2018-10-24 17:03:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87211 to 85740. [2018-10-24 17:03:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85740 states. [2018-10-24 17:03:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85740 states to 85740 states and 110313 transitions. [2018-10-24 17:03:52,884 INFO L78 Accepts]: Start accepts. Automaton has 85740 states and 110313 transitions. Word has length 146 [2018-10-24 17:03:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:52,885 INFO L481 AbstractCegarLoop]: Abstraction has 85740 states and 110313 transitions. [2018-10-24 17:03:52,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:03:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 85740 states and 110313 transitions. [2018-10-24 17:03:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-24 17:03:52,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:52,888 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:03:52,888 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:52,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:52,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1493354488, now seen corresponding path program 1 times [2018-10-24 17:03:52,889 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:52,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:52,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:52,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:52,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:53,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:53,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:03:53,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:53,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:53,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:53,267 INFO L87 Difference]: Start difference. First operand 85740 states and 110313 transitions. Second operand 4 states. [2018-10-24 17:04:18,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:18,609 INFO L93 Difference]: Finished difference Result 215378 states and 276266 transitions. [2018-10-24 17:04:18,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:18,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 277 [2018-10-24 17:04:18,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:18,782 INFO L225 Difference]: With dead ends: 215378 [2018-10-24 17:04:18,782 INFO L226 Difference]: Without dead ends: 118708 [2018-10-24 17:04:18,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:18,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118708 states. [2018-10-24 17:04:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118708 to 118544. [2018-10-24 17:04:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118544 states. [2018-10-24 17:04:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118544 states to 118544 states and 145183 transitions. [2018-10-24 17:04:21,027 INFO L78 Accepts]: Start accepts. Automaton has 118544 states and 145183 transitions. Word has length 277 [2018-10-24 17:04:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:21,027 INFO L481 AbstractCegarLoop]: Abstraction has 118544 states and 145183 transitions. [2018-10-24 17:04:21,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 118544 states and 145183 transitions. [2018-10-24 17:04:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-10-24 17:04:21,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:21,042 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:21,042 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:21,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:21,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1821230627, now seen corresponding path program 1 times [2018-10-24 17:04:21,044 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:21,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:21,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:21,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:21,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-24 17:04:21,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:21,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:04:21,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:21,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:21,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:21,638 INFO L87 Difference]: Start difference. First operand 118544 states and 145183 transitions. Second operand 4 states. [2018-10-24 17:04:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:37,090 INFO L93 Difference]: Finished difference Result 235722 states and 288992 transitions. [2018-10-24 17:04:37,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:37,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 585 [2018-10-24 17:04:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:37,254 INFO L225 Difference]: With dead ends: 235722 [2018-10-24 17:04:37,254 INFO L226 Difference]: Without dead ends: 118546 [2018-10-24 17:04:37,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:37,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118546 states. [2018-10-24 17:04:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118546 to 114412. [2018-10-24 17:04:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114412 states. [2018-10-24 17:04:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114412 states to 114412 states and 127873 transitions. [2018-10-24 17:04:38,294 INFO L78 Accepts]: Start accepts. Automaton has 114412 states and 127873 transitions. Word has length 585 [2018-10-24 17:04:38,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:38,295 INFO L481 AbstractCegarLoop]: Abstraction has 114412 states and 127873 transitions. [2018-10-24 17:04:38,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 114412 states and 127873 transitions. [2018-10-24 17:04:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-10-24 17:04:38,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:38,310 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:38,311 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:38,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:38,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1730665567, now seen corresponding path program 1 times [2018-10-24 17:04:38,311 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:38,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:38,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:38,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:38,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:39,133 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-24 17:04:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 401 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-24 17:04:40,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:04:40,352 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:04:40,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:40,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:04:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-24 17:04:41,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:04:41,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:04:41,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:04:41,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:04:41,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:04:41,134 INFO L87 Difference]: Start difference. First operand 114412 states and 127873 transitions. Second operand 5 states. [2018-10-24 17:05:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:02,997 INFO L93 Difference]: Finished difference Result 254812 states and 283736 transitions. [2018-10-24 17:05:02,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:05:02,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 592 [2018-10-24 17:05:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:03,251 INFO L225 Difference]: With dead ends: 254812 [2018-10-24 17:05:03,251 INFO L226 Difference]: Without dead ends: 132162 [2018-10-24 17:05:03,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 592 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:05:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132162 states. [2018-10-24 17:05:04,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132162 to 86807. [2018-10-24 17:05:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86807 states. [2018-10-24 17:05:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86807 states to 86807 states and 92932 transitions. [2018-10-24 17:05:05,081 INFO L78 Accepts]: Start accepts. Automaton has 86807 states and 92932 transitions. Word has length 592 [2018-10-24 17:05:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:05,082 INFO L481 AbstractCegarLoop]: Abstraction has 86807 states and 92932 transitions. [2018-10-24 17:05:05,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:05:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 86807 states and 92932 transitions. [2018-10-24 17:05:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2018-10-24 17:05:05,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:05,093 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:05:05,093 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:05,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash -4044790, now seen corresponding path program 1 times [2018-10-24 17:05:05,094 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:05,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:05,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:05,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:05,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-24 17:05:08,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:05:08,157 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:05:08,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:08,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:05:08,711 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2018-10-24 17:05:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-24 17:05:10,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 17:05:10,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-24 17:05:10,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:05:10,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:05:10,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:05:10,397 INFO L87 Difference]: Start difference. First operand 86807 states and 92932 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 17:05:33,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:05:33,484 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:05:33,489 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:05:33,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:05:33 BoogieIcfgContainer [2018-10-24 17:05:33,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:05:33,490 INFO L168 Benchmark]: Toolchain (without parser) took 232064.44 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -239.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 17:05:33,491 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:05:33,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3516.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.0 MB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:33,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 1116.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 MB). Free memory was 976.0 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:33,496 INFO L168 Benchmark]: Boogie Preprocessor took 701.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 93.0 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:33,496 INFO L168 Benchmark]: RCFGBuilder took 17708.39 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 255.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 530.2 MB). Peak memory consumption was 785.6 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:33,498 INFO L168 Benchmark]: TraceAbstraction took 209017.54 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -136.2 MB). Peak memory consumption was 974.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:33,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3516.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.0 MB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1116.38 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 MB). Free memory was 976.0 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 701.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 93.0 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17708.39 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 255.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 530.2 MB). Peak memory consumption was 785.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209017.54 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -136.2 MB). Peak memory consumption was 974.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 136). Cancelled while BasicCegarLoop was constructing difference of abstraction (86807states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (101848 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 208.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11517 SDtfs, 40580 SDslu, 3356 SDs, 0 SdLazy, 72796 SolverSat, 17742 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 163.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1468 GetRequests, 1436 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118544occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 51145 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 4165 NumberOfCodeBlocks, 4165 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4155 ConstructedInterpolants, 39 QuantifiedInterpolants, 16075713 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1660 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 2509/2745 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown